GB502830A - Improvements in or relating to deflecting circuits for cathode ray tubes - Google Patents

Improvements in or relating to deflecting circuits for cathode ray tubes

Info

Publication number
GB502830A
GB502830A GB26085/37A GB2608537A GB502830A GB 502830 A GB502830 A GB 502830A GB 26085/37 A GB26085/37 A GB 26085/37A GB 2608537 A GB2608537 A GB 2608537A GB 502830 A GB502830 A GB 502830A
Authority
GB
United Kingdom
Prior art keywords
circuits
coil
current
harmonic
deflecting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB26085/37A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB502830A publication Critical patent/GB502830A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K4/00—Generating pulses having essentially a finite slope or stepped portions
    • H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
    • H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
    • H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only
    • H03K4/26—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor
    • H03K4/28—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor using a tube operating as a switching device

Landscapes

  • Particle Accelerators (AREA)
  • Ac-Ac Conversion (AREA)

Abstract

502,830. Valve circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Sept. 27, 1937, No. 26085. Convention date, Sept. 26, 1936. [Classes 40 (iii) and 40 (v)] To produce a current or voltage of non- sinusoidal waveform in a reactive or capacitative load Lo, a voltage recurring at a given frequency is impressed on the load, which exhibits resonance at the fundamental frequency and at least one harmonic. The deflecting coil Lo of a cathode-ray tube is in the output circuit of an amplifier 9 and is shunted by resonant circuits x, y, z. The input of the amplifier is connected to a generator 1 of impulses which produce a saw-tooth current in the coil. A damping circuit 17 is also shunted across the coil. One of the series resonant circuits is tuned to a frequency between the fundamental frequency and the second harmonic, a second between the second and third harmonics, and the circuits are so tuned relatively to the deflecting coil that the combined circuits exhibit parallel resonance at the fundamental frequency and its second harmonic. The periodic impulses drive the valve 9 from plate-current saturation to plate-current cut-off. The circuit is also used for applying a saw-tooth voltage to deflecting-plates through a step-up transformer, Fig. 3 (not shown). The generator 1 is described in Specification 442,334.
GB26085/37A 1936-09-26 1937-09-27 Improvements in or relating to deflecting circuits for cathode ray tubes Expired GB502830A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US102670A US2149077A (en) 1936-09-26 1936-09-26 Deflecting circuits

Publications (1)

Publication Number Publication Date
GB502830A true GB502830A (en) 1939-03-27

Family

ID=22291042

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26085/37A Expired GB502830A (en) 1936-09-26 1937-09-27 Improvements in or relating to deflecting circuits for cathode ray tubes

Country Status (2)

Country Link
US (1) US2149077A (en)
GB (1) GB502830A (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2629049A (en) * 1942-03-02 1953-02-17 John M Miller Filter
US2579525A (en) * 1942-06-19 1951-12-25 Arthur A Varela Rectangular and saw-tooth impulse generator
GB565099A (en) * 1943-03-17 1944-10-26 Bertram Morton Hadfield Improvements in or relating to alternating current generators whose frequency is proportional to and controlled by a direct current
US2465407A (en) * 1943-03-30 1949-03-29 Arthur A Varela Rectangular wave impulse generator
US2495780A (en) * 1943-04-02 1950-01-31 Sperry Corp Damped shock excited variable width pulse gate generator
US2461321A (en) * 1943-06-24 1949-02-08 Ernst A Guillemin Production of electric pulses
US2431952A (en) * 1944-06-07 1947-12-02 Gen Electric Pulse generating circuit
US2460601A (en) * 1945-01-18 1949-02-01 Rca Corp Cathode-ray tube deflecting system
US2498711A (en) * 1945-04-02 1950-02-28 Standard Telephones Cables Ltd High-frequency amplifier
US2469977A (en) * 1945-05-12 1949-05-10 Bell Telephone Labor Inc Pulser circuit
US2449969A (en) * 1945-05-29 1948-09-28 Rca Corp Compensating device
US2499080A (en) * 1946-12-26 1950-02-28 Rca Corp Cathode-ray beam deflection circuit
US2508926A (en) * 1947-08-28 1950-05-23 Rca Corp Cathode-ray beam deflection circuit
US2565392A (en) * 1949-04-16 1951-08-21 Tele Tone Radio Corp Horizontal deflection circuit
US2790932A (en) * 1949-05-19 1957-04-30 Rca Corp Cathode ray tube deflection yoke interference elimination
US2543720A (en) * 1949-08-10 1951-02-27 Rca Corp Electromagnetic deflection circuit
US2621302A (en) * 1949-08-31 1952-12-09 Rca Corp Band pass voltage multiplier network for pulsed power supplies
US2637832A (en) * 1949-11-29 1953-05-05 Rca Corp Centering circuit for cathode-ray tubes
US2608672A (en) * 1950-01-20 1952-08-26 Westinghouse Electric Corp Cathode-ray tube circuit
US2708728A (en) * 1950-09-28 1955-05-17 Du Mont Allen B Lab Inc Cathode-ray deflection circuit
US2760109A (en) * 1952-12-26 1956-08-21 Rca Corp Kinescope deflection circuits
US2916665A (en) * 1955-10-24 1959-12-08 Motorola Inc Sawtooth current generator
US2928999A (en) * 1957-04-01 1960-03-15 Monogram Prec Ind Inc Square current wave generator for inductive circuits
US3241051A (en) * 1961-04-14 1966-03-15 Philips Corp Deflection transformer system for television receivers
US3461372A (en) * 1965-01-22 1969-08-12 Int Standard Electric Corp D.c. to a.c. power converter
EP3968737A1 (en) * 2020-09-14 2022-03-16 Koninklijke Philips N.V. Voltage switching circuitry for an x-ray tube

Also Published As

Publication number Publication date
US2149077A (en) 1939-02-28

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